Key facts claimed:
- The Historia Brittonum (History of the Britons) was written probably in 829 AD, either by Nennius or with his name attached
- The text claims the first king of Gwynedd was Cunedda, son of Edern, son of Paternus
- Paternus in Welsh literature was a chieftain of the Votadini tribe and a Roman military officer, with the nickname 'the scarlet robe' or 'red cloak'
- The Votadini are associated with the hill fort of Trapain Law according to archaeological evidence
- According to Welsh sources, Cunedda was asked by Magnus Maximus to move with the Votadini into northern Wales, forming the core territory of Gwynedd
